3. I have an email into the electrical engineering and a couple of buddies of mine that are in the electronics mfg business. I agree that its an area that can be cleaned up. Part of the issue is the TV's have gotten so thin, there is no where to hide anything any more.
6. My suggestion...install a piano hinge on that board, leave the existing screws out. Lift the mattress, flip the board up and it wedges under the mattress holding the board and mattress up. We have a rental account that does the same thing (they need constant access as well).
Fresh water tank drain should be right next to the fresh water tank in that storage area under the bed if I recall.
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